Recording a Sequence of Movements
  example>>> 
To get loops of movement or specific strange path, you should "record 
  a sequence".
  
Recording a Sequence:
1. Select the layer in the document window.
2. In the timeline window click in a frame where you want the animation to begin.
3. Select Modify>Timeline>Record Path of Layer.
4. Drag the layer around and don't let go of the mouse until you are finished with your movement.